Tooth-brush.



M. MUM. Patented Jan. 30, I900.

C. L. HALL. TOOTH BRUSH.

(Application filed Apr, 8, 1899.)

(Ho Muriel.)

FFICE.

PATEN CHARLES L. HALL, OF OCONTO, lVISCONSlN.

TOOTH-BRUSH.

SPECIFICATION forming part of Letters Patent No. 642,1 14, dated January30, 1900. Application filed April 3, 1899. $eria1 No. 711,522- (Nomodel.)

To ctZZ whom it may concern:

Be it known that 1, CHARLES L. HALL, a citizen of the United States, anda resident of Oconto, in the county of Oeonto and State of Visconsin,have invented certain new and useful Improvements in Tooth-Brushes; andI do hereby declare that the following is a full, clear, and exactdescription thereof.

My invention relates to that class of toothbrushes which are form edwith hollow handles to contain the dentifrice to be applied to the teethby the brush; and it consists in certain peculiarities of constructionand combination of parts, all as will be fullyset forth herein after andsubsequently claimed.

In the drawings, Figure 1 is a side elevation of a tooth-brush embodyingmy present improvements, partly broken away'or in section to betterillustrate certain certain details of construction. Fig. 2 is atransverse sectional View on the line 2 2 of Fig. 1.

Referring to the drawings, A represents the handle of mytootl1-brush,made hollow to contain the dentifrice o,preferably atooth-paste, the said handle being shown as of a practically square formin cross-section, but this being immaterialso long as it is notcircular, except at its rear end. At the forward or head end B the saidhandle is preferably flattened, as shown, but still hollow, and this endis furnished with the usual tufts of bristles b l) or analogous devicesfor rubbing against the teeth of the user. The head B is furtherperforated with a series of holes preferably guarded by nipples c c, towhich are secured tubes or ducts (l d of suitable material, such as softrubber, which extend to about the same distance from the head as thetufts of bristles b l).

C is a screw-rod which is about the length of the handle proper, theouter end 2 of said rod passing through a screw-cap D, which latter hasan annular flange with interior screw-threads to mesh with threads cutin the exterior surface of the rear end of the handle A, this end beingcircular for the purpose of engaging with said screw-cap.

E is a follower having a screw-threaded bore through which the saidscrewrod 0 passes, and as the, edge of said follower is non-circular andconforms to the shape of the handle when the screw-rod is turned thefollower cannot rotate with it, but must travel back or forth within thehollow handle, according to the direction in which the said screw-rod isturned.

In the preferred construction (illustrated in the drawings) thescrew-rod C is provided with a collar f, which comes against thescrewcap D, the projecting end 6 of the rod being cylindrical to passthrough a circular hole in said screw-cap and beyond that being providedwith any suitable device for turning the rod, such as the outer cap F,to which the said end of the screw-rod C is firmly secured, as shown, sothat the outer cap F may be turned without disturbing the screw-cap D.In place of the said outer cap F the screwrod 0 may be provided with aknob or any other convenient handgrasp for the purpose of turning thesaid rod. As stated, the shape of the handle in section is immaterial,and if more convenient to make it circular it is only necessary toflatten its inner surface or provide it with an interior longitudinalrib or otherwise interrupt its interior circularity and tocorrespondingly shape the adjacent edge of the follower E to accomplishthe same result of non-rotation of the latter when the screw-rod isrotated.

The operation of my device will be readily understood from the foregoingdescription of its construction, taken in connection with theaccompanying drawings. The screw-cap D may be removed and the rod 0 andfollower E pulled out and the hollow handle approximately filled withthe tooth-paste or other dentifrice. Then the rod 0 is replaced, withthe follower E adjacent to the rear end of the rod and the cap D againscrewed to place. Then a turn of the cap or hand-grasp F will rotate thescrew-rod O, and thereby move the follower forward, thus forcing thecontents of the handle out through the holes and tubes d d of the headend, so that as the brush is used the dentifrice will be rubbed therebyupon the teeth of the user.

The handle 13 may be of celluloid, metal, or any desiredsuitablematerial,and the whole device forms a very convenient and attractivetoilet article.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

i and having openings communicating with the- In a tooth-brush, thecombination of an integraltubular handle, open at one end and flattenedat its opposite closed end, theinner surface of said tube beingnon-circular in cross-section, and the exterior surface being circularat the open end and formed with exterior screw-threads; a series ofnipples projecting from the flattened end of the brush interior of thetube; tufts of bristles alternating with said nipples; flexible tubes orducts secured to said nipples; a screw-cap having an annularscrew-threaded flange for engagement with the exterior screw-threads onthe tubular handle, and provided with a central smooth-bored opening; anon-rotatacounty of Oconto and State of Wisconsin, in

the presence of two Witnesses.

CHARLES L. HALL. Witnesses:

GEO. BEYER, H. M. BARLAMENT.

